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1. (WO2018061591) PISTON FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING PISTON FOR INTERNAL COMBUSTION ENGINE

Pub. No.:    WO/2018/061591    International Application No.:    PCT/JP2017/031163
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Thu Aug 31 01:59:59 CEST 2017
IPC: F02F 3/10
B23K 20/00
F02F 3/00
F16J 1/01
Applicants: HITACHI AUTOMOTIVE SYSTEMS, LTD.
日立オートモティブシステムズ株式会社
Inventors: SUGIMOTO Ittou
杉本 一等
PARK Seunghwan
朴 勝煥
TAKAHASHI Norikazu
高橋 智一
SASAKI Masato
佐々木 正登
Title: PISTON FOR INTERNAL COMBUSTION ENGINE AND METHOD FOR MANUFACTURING PISTON FOR INTERNAL COMBUSTION ENGINE
Abstract:
Provided are: a piston for an internal combustion engine with which the adhesion with a substrate and the durability can be secured and low heat conductivity and low volume specific heat can be achieved; and a method for manufacturing the piston for an internal combustion engine. This piston for an internal combustion engine is characterized by the following: comprising a substrate (1), and a surface layer (2) provided on the surface of the substrate (1); the surface layer (2) including a matrix phase (3), and hollow particles (4) that are dispersed in the matrix phase (3) and that have a void inside thereof; the matrix phase (3) comprising a metallic phase (30) constituted by a plurality of metallic particles being bonded together, and gaps (31) surrounded by portions other than the bonding portions of the metallic particles; and the hollow particles (4) being included in the gaps (31).